<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>广告实验</title>
    <link rel="stylesheet" href="cs.css">
</head>
<body>
<div class="web"></div>
<div id="id">
    <div id="id1"></div>
</div>
<div id="id2">
    <div id="id3"></div>
</div>
<div id="id4">
    <div id="id5"></div>
</div>
</body>
<script src="ad_lr.js"></script>
</html>